Mansfield



G. A. MEAD.

TROLLEY WIHE`CLAMP.

APPucATloN msnm. 7, 1919.

1,354,503, Patented ome. 5,1920.

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`Ulvirsas'rarssf ...PATENT risica.

GEORGE A. MEAD, OF MANSFIELD, VOEIO, ASSIGNORTO THE OHIO BRASS COMPANY, OF

, MANSFIELD, OHIO, .A CORPORATION OF NEW JERSEY.

TROLLEY-VJ'IRE CLAMP.

. Specification of Letters Patent. Patented Oct. 5 1920.

Application filed April 7, 1919. Serial No. 288,059.

' To all whom t 'ning/'0072061212:

'and useful Improvements iii Trolley-Tire Clamps, of which the following is a specfication.

' This invention relates to trolley wire Clamps, the purpose of which is to securely lsupport or suspend the trolley wire from its overhead support.

The object of the invention is to provide means to hold the various parts in a yielding relation to each other whereby the looseness of the parts will notpermit of rattlefand whereby the trolley wire may be preliminarily secured within the clamping jaws prior to the clamp being rigidly secured in a permanent position with respect to the overhead support or hanger.

The invention consists in the features of novelty disclosed inthey construction, Ycombination and arrangement vof the several parts shown'iii the accompanying drawings and disclosed in the specification, but more particularly pointed out in the appended claims.

Referring to the drawings Figure l is an Vend view of the clamp in partial sectionV and shows the relation of the parts, before application to a hanger.

Fig.A 2 showsan end lviewr of the trolley clamp in section and shows more clearly the same relation ofthe parts as in Fig. l and at the same timeshows the relation of the `clamp Vto the face of the hanger before the parts not only of the clamp but theirrelation tothe vhanger when the parts of the clamp have been manipulated to permit the insertion of the trolley wire.

Fig. 4 is a sectional viewvof the clamp and hanger showing the trolley wire in place and permanently secured there for operation.

Fig. 5 shows a side elevation view Vof the clamp vand hanger in section on the line 55 of Fig. 4.

Fig. 6 is a section view on the line 6-6 of Fig. l to show the interlocking of the two rotatable members.

The manufacturer of trolley clamps finds it necessary on account of the great variety of styles and sizes of trolley wire to miniinize the varieties or sizes of trolley clamps as much as possible, not only from his own standpoint of reducing cost through reducing' the number of .styles or sizes of clamps but 'from the standpoint of the user who very much prefers one' clamp to meet all conditions if possible. To fulfil these requirements the manufacturer finds he is compelled to design his clamp in such a manner that there is considerable looseness or variation in the parts in order that they may be adaptable tothe various sizes of wire and this means that there is considerable rattle and movement of the parts relatively to each other before they are installed. This has been found to detract from the impression which the clamps give the user and is liable to cause prejudice. upon his part.

1lith my improvement this objection is overcome invia very simple manner as it tends to'hold the parts in a somewhat iiXed yet yieldable relation to each other when desired. This improvement also permits of attaching the hanger and clamp in position and then` stringing the trolley wire and slipping the-same in place prior to the permanent securing of the clamp and trolley.

wire in final position. This is found to be -of advantage w iere the customer desires to vstring a considerable length of trolley wire vand hold it up to position and then draw the same up-taut before clamping the trolley wire in. place. i j' Y In constructing my preferred form I provide a pair of clamping jaws indicated by the numeral l and these are held iii a hinged relation to each other by means of the pin 2 Vpassingy throughV the lug 3 integrally secured to each of the jaws 1 and alternately related 'inthe assembled device. The jaws are provided with a recess 4. In order to suspend 'the jaws and secure them to the overhead lower outer edge of which is beveled as indicated at 11 and this beveled edge 11 engages the .corresponding beveled face 12 on the inner face of the aws 1.' The `collar 10 is provided with the shoulder 13 and positioned between the shoulder 13 and the flange 9 is a spring 14 tending to press the shoulders `9 and l1:5 apart and consequently the members to which theseshoulders are attaclied. This tendency of the members and to be moved as described causes the upper portion oi' the jaws l1` to be moved outward and with sulicient spring action the jaws will be-moved as tar astheir construction will permit `and hence the `parts will be :held in a yielding but firm relation relatively to each other.

The in ner face of the collar 10 is provided with a plurality of faces coinciding with the Vraces on the last line, `all as shown VVin WFig-6. rIhe outer face of the collar 1() `is 3also provided witha .plurality of faces for the application of -a wrench which Ais necessary when permanently installing the clan'rp upon a hanger to cause lit to securely grip the trolley wire. AWhen 4the member 10 is rotated the stud 5 is likewise rotated on account of the plurality of engaging faces. s

VIn installing the devicejust described the clampis screwedonto the supporting stud 15, leaving however a space between the lower'-tace of the hanger 16 andthe 'upper face off the collar 10-as indicated by A. The

i `are allow-ed to spring back `thereby engag-v upper portion of the .jaws 1 are then `scpieezed together thereby forcing the collar 10 upward against the tension of the springY Vlll vas shown Vin Fig. 3 and this opens the lower edge of the jaws -1, permitting the insertion of the trolley wire. Then Athe trolley wire has 'been thus inserted; the jaws tively to the collar `10, thereby forcing the upper -edges of the jaws outwardly'and the Ilower edges of fthe jaws into firm and secure engagement with the trolley wire, thus vcompleting the installation of the clamp and wire. Y

I am aware that the herein disclosure will suggest variations that may be made, to those skilled in the art, but I Vdo not wish to be 'limited as tothe scope of my inventionbeyond that set forth in the appended claims.

that l claimisz- 1. A trolley wire support comprising clamping jaws adapted to receive and clamp a trolley wire, a member rotatably secured to the jaws and having means for attachto the jaws to move them into secure engagement with the trolley wire and yielding means Vacting on the last Vnamed means lor maintaining the parts in yieldable engagement with Ieach' other Aprior to being secured to the trolley wire hanger.

`2. A trolley wire clamp comprising in combination a pair of clamping aws adapted to engage and hold a trolley wire, a rotatable membererm the `jaws and hav- -ingmeans for engaging a support, Van O perating member mounted on and rotatable with the rotatable member to secure the Ijaws in permanent clamping engagement with the trolley wire `and yielding means .interposed y.between the members vto hold the operating member in yielding engagement with the jaws.

3. A trol-ley wire clamp comprising in combination a pair of clamping jaws adaptled to engage and hold a trolley wire, a rotatable member engaging the jaws, an 0perating member mounted on, rotatable with and movable longitudinally of the rotatable member to 4secure the ljaws in permanent clamping engagement with the trolley wire and yieldingmeans interposed between the vmembers to Vmove them relatively to each vother in one direction longitudinally.

M4. A ytrolley wire4 clamp comprising a pairof clampingjaws. adapted to engage and hold a trolley wire, a support member for engagement with a support, an operatmg'member mounted on the support memin `engagement, with the trolley wire, and

resilient means engaging the Toperating means to maintainV it in yielding engagement with the trolley wire. Y Y

In testimony whereof I aliix my signature.

Grenen A. rMii-in.

ment to a hangeigmeans movable relatively engagingrthe jaws and .provided with means Y -ber 4to engage the jaws and maintain them 

